Canvas.h

   1 /*
   2  * This file is part of NumptyPhysics
   3  * Copyright (C) 2008 Tim Edmonds
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 3 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  */
  16
  17 #ifndef CANVAS_H
  18 #define CANVAS_H
  19
  20 #include "Common.h"
  21 class Path;
  22
  23 class Canvas
  24 {
  25   typedef void* State;
  26 public:
  27   Canvas( int w, int h );
  28   virtual ~Canvas();
  29   int width() const;
  30   int height() const;
  31   int  makeColour( int c ) const;
  32   int  makeColour( int r, int g, int b ) const;
  33   void resetClip();
  34   void setClip( int x, int y, int w, int h );
  35   void setBackground( int c );
  36   void setBackground( Canvas* bg );
  37   void clear();
  38   void clear( const Rect& r );
  39   void fade( const Rect& r );
  40   Canvas* scale( int factor ) const;
  41   void scale( int w, int h );
  42   void drawImage( Canvas *canvas, int x, int y );
  43   void drawPixel( int x, int y, int c );
  44   int  readPixel( int x, int y ) const;
  45   void drawLine( int x1, int y1, int x2, int y2, int c );
  46   void drawPath( const Path& path, int color, bool thick=false );
  47   void drawRect( int x, int y, int w, int h, int c, bool fill=true );
  48   void drawRect( const Rect& r, int c, bool fill=true );
  49   int writeBMP( const char* filename ) const;
  50 protected:
  51   Canvas( State state=NULL );
  52   State   m_state;
  53   int     m_bgColour;
  54   Canvas* m_bgImage;
  55   Rect    m_clip;
  56 };
  57
  58 class Window : public Canvas
  59 {
  60  public:
  61   Window( int w, int h, const char* title=NULL, const char* winclass=NULL, bool fullscreen=false );
  62   void update( const Rect& r );
  63   void raise();
  64   void setSubName( const char *sub );
  65 };
  66
  67
  68 class Image : public Canvas
  69 {
  70  public:
  71   Image( const char* file, bool alpha=false );
  72 };
  73
  74
  75 #endif //CANVAS_H